"Bolts
are among the lowest cost-per-unit items in a company's parts inventory,
and their importance in keeping the chain of production
intact is easy to overlook."
Engineering
& Mining Journal Dec 1, 2001
"A landmark
study was conducted by...The National Institute of Science and
Technology.....summarized in the report entitled, "Economic Effects of Metallic
Corrosion in the United States". According to the recent update of these
findings, the annual costs of metallic corrosion....is about $350 billion
annually. Furthermore, according to the study, $139 billion
(40 %) of these costs could be avoided through application of existing
technologies and best know practices."
Corrosionsource.com
|
Fastener
News
There are rumors of possible criminal indictments in Florida against one
or more fastener distributors accused of selling steel self drilling screws
as 410 Stainless Steel. As both parts are usually sold plated, it is nearly
impossible to distinguish the difference in these two magnetic parts. The
only guaranteed way of determining what you are receiving is to have them
tested by a lab, but there is a trick the old-timers have. Place any steel
screw against a grinder wheel and take note of the size of the sparks. Doing
the same with a 410 screw will reveal an entirely different size spark. Buying
from an established supplier is your best tool against fastener
fraud(more). |
|
Galling
Stainless nuts, especially nylon insert lock nuts, when applied to a stainless
bolt, have a tendency to gall or "seize up". The heat generated by the two
stainless parts rubbing together can actually "cold weld" the nut and bolt.
To eliminate this, lower the RPM of your power tool during application and
purchase the nut waxed. Simply dipping a nut in floor wax is a quick fix.
Additional Info. |
|
Can you trust every distributor of stainless
fasteners? Answer
3 out of 4 freshwater boats built in the US today use
stainless fasteners from Marine Fasteners |
|
Richard
Brearley discovered stainless when he noticed the material he had discarded
from a failed experiment wasn't rusting in 1913. |
|
Change
in Passivation Standards
In a move to make the passivation of stainless more environmentally friendly,
the US government has adopted
ASTM
A967 which promotes citric acid, and cancelled QQ-P-3C which required
nitrc acid. |
